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Transcript
Read Handout: Section 2.7 (Science Perspectives 9 by Nelson) – pages 52 - 55 - limiting factors place can be biotic or abiotic . Abiotic Factors o every species is able to survive within a range of abiotic factors this is the of the species o population will be high within the optimum range o population will be low outside of the optimum range but within the tolerance range o the species will not exist outside of the tolerance range Ex. Precipitation and Population o species with broader tolerance ranges are able to adapt to a larger variety of conditions and are better suited to acting as an invasive species terrestrial abiotic factors include temperature, precipitation, nutrient availability and light aquatic abiotic factors include salinity, Limiting factors include ABIOTIC temperature, acidity, light (physical) factors and BIOTIC factors penetration and availability of oxygen and nutrients Abiotic Factors • • • • • • • • • Light availability/day length, seasonality moisture/water availability temperature, diurnal temperature range elevation or depth, pressure turbidity tidal range Salinity Wind pH, C02, O2, availability of N, P, K, S, Mg, Ca, etc. Biotic Factors o abiotic factors determine where a species can live and biotic factors determine how successful it will be o biotic factors involve interaction among individuals and different species groups Limiting factors include ABIOTIC (physical) factors and BIOTIC factors Biotic Factors • • • • • • • Competition Predation Parasitism Disease Pollinators, dispersal agents suitable food availability species density/distance to nearest neighbour) Complete the following Table: Relationship Competition Predation Mutualism Parasitism Commensalism Definition Example Carrying Capactiy o as a population’s size increases so does their demand for available resources o limits to growth result in the population reaching a stable upper limit that the ecosystem can support this is the . o can be altered by humans or other species Ex. Answer the following questions in your notebook using full sentence answers: Pg. 55 # 1 - 8